1ST SOURCE CORP

APPENDIX

CONSOLIDATED BALANCE SHEET 38page (Dollars in millions) 2022 2023 2024 2025 2026 YTD Cash and cash equivalents 123$ 130$ 125$ 120$ 105$ Investment securities and other investments* 1,800 1,648 1,560 1,545 1,529 Loans and leases, net of unearned discount 6,015 6,520 6,857 7,051 7,344 Allowance for loan and lease losses (139) (148) (155) (162) (167) Other assets 540 578 545 501 531 Total assets 8,339$ 8,728$ 8,932$ 9,055$ 9,342$ Noninterest-bearing deposits 1,998$ 1,656$ 1,639$ 1,600$ 1,671$ Interest-bearing deposits 4,930 5,383 5,591 5,625 5,798 Total deposits 6,928 7,039 7,230 7,225 7,469 Total borrowings 321 419 347 341 328 Other liabilities 166 202 173 171 194 Total shareholders' equity 864 989 1,111 1,275 1,320 Noncontrolling interests 60 79 71 43 31 Total equity 924 1,068 1,182 1,318 1,351 Total liabilities and equity 8,339$ 8,728$ 8,932$ 9,055$ 9,342$ *All investment securities are available for sale. The Company does not hold any held to maturity investment securities.

CONSOLIDATED INCOME STATEMENT 39page (Dollars in millions) 2022 2023 2024 2025 2025 YTD 2026 YTD Net interest income 263$ 279$ 301$ 348$ 255$ 279$ Provision for credit losses 13 6 12 13 12 10 Noninterest income* 81 84 82 83 66 72 Noninterest expense* 174 195 200 214 158 164 Income before income taxes 157 162 171 204 151 177 Income tax expense 36 37 38 46 34 40 Net income 121 125 133 158 117 137 Net income attributable to noncontrolling interests - - - - - - Net income available to common shareholders 121$ 125$ 133$ 158$ 117$ 137$ Diluted net income per common share 4.84$ 5.03$ 5.36$ 6.41$ 4.74$ 5.62$ * Note: Noninterest income and Noninterest expense are shown net of leased equipment depreciation. See Reconciliation of non-GAAP Financial Measures" in Appendix.

40page Transportation & Warehousing 11% Finance & Insurance and Real Estate 17% Services 21% Retail Trade 6% Construction 10% Manufacturing 15% Ag, Forestry, Fishing & Hunting 9% Wholesale Trade 7% Other* 4% * Other includes: Mining, Utilities, and Information AIRCRAFT PORTFOLIO INDUSTRIES BY NAICS

58% 38% 4% 41page Interest Rate Risk Characteristics • Variable rate loans reprice quickly — 90.8% of Variable reprice within 3 months. • Fixed rate loans have short terms • Weighted average remaining life of 2.80 years. • Stable, low-cost deposit funding base — The effective rate on deposits as of September 30, 2026, was 1.85%. — 22% non-interest-bearing deposit • Liquid and high-quality investment portfolio of $1.5 billion. • Average investment portfolio duration of 3.4 years. Net Interest Income Sensitivity 1 year difference versus no rate change +100 bps Parallel Ramp -100 bps Parallel Ramp +0.64% -1.37% LOANS Fixed Variable Repricing within 3 months Variable Repricing greater than 3 months ASSET LIABILITY MANAGEMENT Fixed WARL of 2.80 years.

42page OWNERSHIP SUMMARY Rank Institution (Top 10 Institutions) Shares % of Total 1 BlackRock Inc. 2,039,169 8.5% 2 Dimensional Fund Advisors LP 1,466,907 6.1% 3 Vanguard Capital Management LLC 850,777 3.5% 4 State Street Investment Management 693,773 2.9% 5 First Mercantile Trust Co. 655,083 2.7% 6 Charles Schwab Investment Mgmt Inc. 612,299 2.5% 7 American Century Investment Mgmt Inc. 547,423 2.3% 8 Geode Capital Management LLC 524,714 2.2% 9 Janus Henderson Group Ltd. 481,186 2.0% 10 Boston Trust Walden NA 386,741 1.6% Top 10 Institutions(2) 8,258,072 34.3% Other 5,400,358 22.4% Total Institutional Ownership(2) 13,658,430 56.7% Institutional, 56.7% Insiders, 26.3% Retail/Other, 14.3% 1st Source ESOP, 2.7% (1) As of September 30, 2026 (2) As of June 30, 2026 or most recently reported data Source: S&P Global Market Intelligence and Company filings Institutional 13,658,430 56.7% Insiders 6,322,089 26.3% Retail/Other 3,448,717 14.3% 1st Source ESOP 655,083 2.7% Total Shares Outstanding(1) 24,084,319 100.0%